<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Component</title>
    <script src="../../vue.js"></script>
</head>
<body>
    <div id="app">
        <!-- <button @click="count++">click {{count}}</button>
        <button @click="count1++">click {{count1}}</button>
        <button @click="count2++">click {{count2}}</button> -->
        <my-component ></my-component> 
        <my-component ></my-component> 
        <my-component ></my-component> 
    </div> 
    <script>

        Vue.component('my-component',
        {
            data(){
                return {
                    count:0
                }
            },
            template:'<button @click="count++">click {{count}}</button>'
        })
        var vm=new Vue({
            el:'#app',
            // data:{
            //     count:0,
            //     count1:0,
            //     count2:0,
            // }
        })

    </script>
</body>
</html>